package day11.system;

import java.util.Arrays;
import java.util.Properties;

/**
 * @Auther:小陈的Java
 */
public class SystemDemo1 {
    public static void main(String[] args) {
        int[] arr = {1,2,3,4,5};
        int[] arr2 = new int[10];
        System.arraycopy(arr,0,arr2,0,4);
        System.out.println(Arrays.toString(arr2));
        System.out.println(System.currentTimeMillis());
        Properties properties = System.getProperties();
        System.out.println(properties);
    }
}
